Final answer:
The student met employees from all the mentioned cities: Tempe, Arizona; Denver, Colorado; and Honolulu, Hawaii.
Step-by-step explanation:
The subject of this question is Social Studies and it is at a High School level. The question asks which cities the student met employees from during their company retreat, and the options are Tempe, Arizona; Denver, Colorado; Honolulu, Hawaii; and All of the above. The correct answer is (d) All of the above, as the student met employees from all three of these cities.